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Citation: LUO Kaijun, JIANG Shiping, ZHANG Lifang, ZHU Weiguo, WANG Xin. Saturated Red Polymer Electrophosphorescent Devices with meso-Tetrakis(4-n-decanoyl-phenyl) Porphyrin Platinum(Ⅱ) Complex as Emitter[J]. Chinese Journal of Applied Chemistry, ;2011, 28(10): 1155-1160. doi: 10.3724/SP.J.1095.2011.00659 shu

Saturated Red Polymer Electrophosphorescent Devices with meso-Tetrakis(4-n-decanoyl-phenyl) Porphyrin Platinum(Ⅱ) Complex as Emitter

1.
a College of Chemistry and Materials, Sichuan Normal University, Chengdu 610068;
2.
b College of Chemistry, Xiangtan University, Xiangtan

Corresponding author: LUO Kaijun,
Received Date: 5 November 2010
Available Online: 25 December 2010
Fund Project: 国家自然科学基金(20472060和21072141)资助项目 (20472060和21072141)四川省教育厅应用基础项目(08ZA040) (08ZA040)

The saturated red polymer electrophosphorescent devices have been fabricated.With the device structures of ITO/PEDOT:PSS/PVK/PFO+30% PBD:TDPPPt/Ca/Al(ITO:indium tin oxide,PEDOT:poly(3,4-ethylenedioxythiophene),PSS:poly(styrenesulfonate),PVK:poly N-vinyl carbazole),based on short lifetime meso-tetrakis(4-n-decanoyl-phenyl) porphyrin platinum(Ⅱ) complex(TDPPPt) and poly(2,7-9,9-dioctylfluorene)(PFO) in which 30% 2-(bi-phenyl-4-yl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole(PBD) was doped.The saturated red emission is obtained when doping concentration of TDPPPt is 3%~10%.The CIE(Commission Internationale de L'Eclairage) coordinates of the device is about at(0.66,0.28) and unchangeable when driven voltage increases from 7 V to 14 V.The maximum luminance and luminance efficiency(η_l) is 1 390 cd/m² at 18 V and 1.34 cd/A at 18×10^-3 A/cm²,respectively.Furthermore,the devices show excellent stability under high driven current density.η_l only drops to 88% and 73% of maximum efficiency at 100×10^-3 A/cm²,and 150×10^-3 A/cm²,respectively.We tentatively attribute excellent devices stability under high driven current density to the short radiative lifetime that avoids triplet-triple annihilation.
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